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papers), 32 ; of Histology and Microscopy, 4 ; of Anthropology, 

 26; of Economic Science and. Statistics, 21. The lecture was on 

 Friday evening by Capt. E. L. Corthell, on " The Interoceanic 

 Problem and its Scientific Solution," with lantern illustrations. 

 The address of retiring President Lesley was delivered on 

 Wednesday evening to a large audience in University Hall, the 

 vice-presidential addresses having been mostly given during the 

 afternoon. 



The arrangements effected by the local committee appeared to 

 have been perfect, and were the subject of universal commenda- 

 tion. All the usual preparations of rooms, blackboards, tables, 

 sign-boards and the like were provided, and there was opened, 

 next door to the Permanent Secretary's office, a post-office, express 

 office, telegraph office and telephone office. On the same floor was 

 the office of the committees on excursions and on transportation. 

 The insufficiency of the hotel accommodations led to the opening 

 of many private houses — not a few for both lodgings and board — 

 and a common restaurant with a capacity of 300 was organized 

 for such as desired it. Many citizens were also free entertainers. 

 On Thursday evening a public reception was given at the Court 

 House — a new fine building with imposiug staircases — whose two 

 stories and basement had been decorated with elaborateness and 

 artistic taste, which won praise from the thousand guests in 

 attendance. On Friday afternoon the city gave also an elegant 

 lawn party on the campus. On Saturday 400 guests, invited by 

 the liberality of Detroit, enjoyed, free of all expense, an excursion 

 to Detroit and thence by the steamer Northwest up the Detroit 

 River and Lake St. Clair, viewing the government improvements 

 in the lake and the unique line of summer houses on the islands; 

 and thence to Marine City. At this point are very extensive salt 

 works, based on an enormous supply of rock-salt of the Salina 

 Group, found here 1633 feet below the surface, and having a 

 known thickness of over 115 feet. After an inspection of these 

 works, for which every facility was provided by the proprietor, 

 Mr. C. McElroy, the excursion proceeded to St. Clair, where an 

 elegant dinner was served at the " Oakland House," a vast 

 summer hotel, whose business is based on a mineral-well supplied 

 from the Huron Group and rich in sulphur. Returning from 

 here, a lunch was served on board, speeches of greeting were 

 made and replied to, and a delightful day was ended with the 

 return at 9 o'clock. A general excursion was also arranged for 

 September 2d to Mackinac and thence in various directions. 

 Entertainments of less general character were numerous. A 

 reception was given to the geologists and many of their friends 

 on Friday evening by Professor A. Winchell, and one to the 

 chemists and their friends on Monday evening by Dr. Prescott. 

 The botanists were taken by Professor Spaulding on an excursion 

 to the Tamarack Swamp. Invitations to lunch and dinner were 

 abundant; and carriage rides about the city and suburbs were 

 quite general. The principal interest in these details is the 

 demonstration that the Association can obtain ample conveniences. 



